Based on the available information, dietary changes can complement the effects of Lipitor (atorvastatin), a medication used to treat high cholesterol levels. According to the National Center for Biotechnology Information (NCBI) [2], lifestyle modifications, including dietary changes, are crucial in managing high cholesterol, and medication is often used in conjunction with these modifications.

The National Health Service (NHS) explains that Lipitor works by lowering the amount of cholesterol your body produces [3]. However, it is essential to recognize that Lipitor's effectiveness can be further enhanced when combined with a healthy diet [2]. The NCBI mentions that a low-fat, low-cholesterol diet can help reduce LDL ("bad") cholesterol levels and increase HDL ("good") cholesterol levels [2].

In summary, dietary changes can indeed enhance the effects of Lipitor by contributing to lower LDL cholesterol levels and higher HDL cholesterol levels. It is important to consult healthcare professionals for personalized advice on dietary changes and medication usage.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/books/NBK430779/
[3] https://www.nhs.uk/medicines/atorvastatin/common-questions-about-atorvastatin/